Lock for accttmxtlator mechanism of adding-machines



W. W. LASKER.

LOCK FOR ACCUMULATOR MECHANISM OF ADDING MACHINES.

APPLVCATION FILED LAN.?I.1915. 1 30,9 897 Patented July 15, 1919.

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[iii/6725012 w. w. LASKER.

LOCK FOR ACCUMULATOR MECHANISM OF ADDING MACHINES.

APPLICATION FILED JAN.2l.'1916.

-1,309,897. Patented July 15, 1919.

2 SHEETS-SHEET 2.

WZZZ a/12 "Ilia 57261",

. UNITED STATES PATENT OFFICE.

WILLIAM W. LASKER, OF BROOKLYN, NEW YORK, ASSIGN'OR TO POWERS ACCOUNTING MACHINE COMPANY, OF NEW YORK, N. .Y., A CORPORATION OF DELAWARE.

LOCK FOR ACCUMULATOR MECHANISM OF ADDING-MACHINES.

Application filed January 21, 1916. Serial No. 73,268.

To all whom it may concern:

Be it known that I, \VILLIAM W. LAsKER,

a citizen of the United States, residing in Brooklyn,-in the county of Kings and State of New York, have invented certain new and means of accumulators, such asillustrated in the patent of -Hubert Hopkins, 1,039,130 patented. September 24,1912 by which means the carrying means will be positively locked against displacement when the adding means or accumulators are out of engagement with accumulator actuating means,

Another object of the invention is to provide means. for locking such carrying means against displacement until accumulators have cooperated with them to raise them into carrying position. I

Still another object of the invention is to provide [means whereby such a locking means will be withdrawn into locking p0Si'-' .tion when the accumulators are withdrawn out of engagement with accumulator actuating m'eans.

hese and other features, capabilities and.

advantagesof the I invention will appear from the subjoined detailed description of one specific embodiment of the invention illustrated in the accompanying drawings in.

Figure l is a fragmental plan view showing the frame work on which the accumula- -t0r wheels and locking'me'ans' aremounted.

Fig. 2 is a transverse section-on'the line 22 of'Fig. 1, and also showing a portion of the addin wheelfactuatingfmeans in operative relationtheieto. 4 1 3g. 3 is an elevation of 'the' frame on which the accumulators and locking means are mounted, together with related parts.

Fi 4=isa erspective view of the frame by w ich. the ocking means are guided.

Specification of Letters iatent.

. shaft isprovi the segment 22. This movement Patented July 15, 1919.

Fig. 5 is an elevation of one of the brackets by which the guiding frame is sup orted.

F1gs. 6 and? are end and side e evational views respectively of one of the locking elements.

In the embodiment illustrated, there is provided a fixed frame having two side plate members 11, 1-1 which are secured to one another by the rear rod 12, the intermediate pivot bolt 13 and the front pivot bolt 14.

On the intermediate pivot bolt 13, the carryng bars 15, in'the present instance nine being shown, are pivotally mounted with thelr activeends extendin forwardly which are provided with upwardly and rearwardly extending hook portions 16'to provide two engagement faces 17 and 18, the. extreme rearwardly extending ends of the hook portions 16 forming engagement faces 17, and the bottom'of the hookportions 16 forming the engagement faces 18.

As illustrated in prior patents. the aforesaid Hopkins patent for 1nstan'ce,the faces 17 and 18 are adapted to position sectors 19 swingingly mounted on the shaft 20, one for each carrying bar 15. Adjacent to each sector 19 and also Cpivot'ally mounted on the ed a type carrier segment 21 having a type carrying arm 22 at the free end of which type 23 are mounted. The segment 21 is provided with a slot 24 in which the pin 25 of its adjacent sector 19 rides. On each sector 19 there is also provided a pin 26 to limit the rearward movement of the segment 22. Thus the segment 22 will 'belimited in its forward movement by the face'27 of the slot 24 engaged by the pin 25, and in its rearward movement limited by the pin 26 engaging the rear end of of the segment 22-.relative to the sector 19- is equal to one tooth space hereinafter to be explained. The lower-end of the sector 19 is provided with gear teeth 28 adapted to meshwith the teeth 29 of the adding wheels30 each adding- Wheel .30 being provided with ten teeth and a boss-31 on one side from. which and adjacent to one of the teeth 29 a spur 32 extends. The adding wheels 30 are mounted on a shaft 33 secured in the forward ends of the arms 34, the rearward ends of the arms 34 being pivotally connected to the bolt 13 on the outside of the plates 11. The number of gears 30 corresponds to the number of carrying bars 15'and sectors 19, a unit comprising; one of each operatively related to one another.

Qn the lower edge of the front end of each bar-15, is provided a spur 35 to o5perate with the spur 32 of an adding wheel 30, the relation being such that upon engagement of a spur 32 with a spur 35 when the adding wheels 30 are in mesh with the sectors 19 in the movement of such sectors 19 from right to left as per Fig. 2, the inclined faces of such spurs 32 and 35 will engage and raise the carrying bar 15 on which such spur 35 is formed. Upon engagement of aspur 32 with a spur 35 when the sectors 19 are in mesh with the adding wheels 30 in the movement of such sectors 19 from left to right as per Fig. 2, the perpendicular faces of such spurs 32 and 35 will contact with one another to prevent the further movement of the adding wheel 30 as well as of the sector 19 of that particular unit.

The arrangement is such that, when ac.- cumulating, the adding wheels 30 are disengaged from the sectors 19 in the movement from left to right of the sectors 19, and are engaged or in mesh with the sectors 19 when the sectors 19 move from right to left; and when taking a total, the adding wheels 30 are in mesh with the sectors 19 in the movement left to right of the sectors 19, and out of mesh in the movement from right to left of the sectors 19. For positioning the sectors 19 when they return to the left hand position, the hook portion 16 of an adjacent unit will engage with its pin 59, the face 17 engagin the pin 59 when the adding wheel of the a acent bar 15 has accumulated any number between one and nine, but when the adding wheel has accumulated just ten, its spur 32 will engage the spur 35 of the adjacent bar 15 and raise the same, in which raised position, the face 18 will be disposed in the path of movement of the pin 59 and thereupon the sector 19 be permitted to receede a tooth-space farther than when limited by the face 17, the tooth-space between the faces 17 and 18 bein equal to the space between two of the teeth 29. In this manner, the adding wheel, of the column next higher will have accumulated an additional unit thereby to reproduce carrying the tens unit in addition.

For providing locking means for temporarily locking the outer bars 15 in raised position when raised as aforesaid by the. spurs 32, bell cranks 36 are provided one for each bar 15, which bell cranks 36 are mounted on the pivot bolt 14, the front arm being connected by a spring 37 with the spring abutment rod 38 secured to the 6 frame plates 11 and its rear arm disposed below the retractor rod 39 mounted by the arms 34 and free to move with the arms 34 in the slots 40 provided for that purpose in p the lates 11.v V i T e bars 15 along their lower edges rearwardly of the spurs 35 are each provided with a shoulder 41 against the rear side of which the front arms of the bell cranks 36 rest when the bars 15 are in depressed posi- 1 tion, the bell cranks 36 being held in such position by the springs 37. When a bar 15 is raised by a spur 32,,it will raise its shoulder 41 out of engagement with its bell crank 36 and thereby permit the spring 37 to pull such bell crank 36 so that its front arm extends below the shoulder 41 and its rear arm strikes and limitsthe forward move ment of such bell crank 36 b engagement with the retractor rod 39. T e bell cranks 36 will be restored to their rearward position and thereby permit the bars 15 to de- Scend, when the adding wheels 30 are lowered out of engagement with the teeth 28in which action, the rod 39 which is secured 1 to the arms 34 on which the adding wheels 30 are mounted will likewise be lowered and in its descending movement engage the rear arms of the bell cranks 36 and retract them so that their front arms are moved to the 1 rear of the shoulders 41 and then upon the 9 bars 15 descending the bell cranks 36 will again engage the rear face of the shoule' ders41.

- The rod 42 on the front ends of the arms I 43 which are pivotally connected at their. rear ends to the pivot bolt 13 engage be,- tvveenthe teeth 29 of the adding wheels 30 to lock such adding wheels against displacement when they are lowered out of engage- J ment with the teeth 28.- The cam links 44,

pivoted intermediately on the frame 11, are engaged and raised by the ten pins of the adding wheels 30, and caused, at their rear ends, to press near the rear ends of i the arms 43 and force them downwardly,

'whereby'the rod 43 disengages the teeth 29.

The feature of positively locking the carrymg bars 15 against displacement when in their lower position and which forms the mam feature of the resent invention comprises essentially a p urality of bent levers or anchoring means 45 each pivotally connected at its angle to one of the bars 15 between the pivot bolt 13 and. the shoulder 41 of such bar. The levers each embrace a forwardly extending'arm 46 which in the present instance, is indented at 47 to pass the front arm of the bell crank 36 disposed below it and provided at its extreme front end with a curved cam portion 48 conforming to the concave surface formed between the spur 35 and shoulder 41 of a bar 15; and

the levers also each have a rear or downwardly extending arm 49 which is notched at its lower end to form a hook .portion 50 to engage the locking plate 51 which is mounted by the brackets 52 one at each end of the locking plate 51, which brackets 52 are secured to the frame sides 11 at their upper ends. Secured to the lockin plate and extending upwardly therefromtliere is provided a. guide late or comb53 comprising a bent plate, t e downwardly extending portion of which is secured to the locking plate 51 and the forwardly extending por tion ofawhich is provided with a series of slots 55, in number corresponding to the number of levers 45 and each adapted to accommodate and permit the downwardly extending arm of a lever 45 to enter into such slot 55 to be guided thereby. A spring abut-' mentrod 56 is mounted between the rear upper ends of the brackets 52. To this rod 56 one of the ends ofthe springs 57- are connected, the other ends of suchsprings being connected to the downwardl extending arms 49v of the levers 45 whereli 45 are normall maintained in retracted po- 48 are spaced from the bars 15 as s own in Fig. 2.

The operation is as follows: When the bars 15 are in their depressed or lower position, the hook ends 50 will engage the looking plate 51 and thereby positively prevent the raising of the arms 15'. Thereupon when an adding wheel 30 has been connected so that its spur 32 is moved to coperate with a spur 35 to raise a' bar 15, it will first have to engage the cam portion 48 and thereby rock the thereto connected lever 45 out of engagement with the locking plate 51 and consequently the spur 32 can then cooperate with the spur 35 to raise the bar 15.

It is obvious that various changes and modifications may be made to the details of construction without departing from the general spirit of'the invention.

I claim:

1. In a device of the characterdescribed, the combination of adding wheels; carrying bars associated therewith and adapted to assume carrying and non-carrying positions; means for positively locking the bars in each position against movement toward the other position, said adding wheels being operable to release said carrying bars.

2. In a device of the character described, the combination of adding wheels,.vcarrying bars associated with said'wheels and adapted to be moved thereby from non-carrying to carrying position; yieldable locking means for positively holding said bars in carrying positlon against movement toward non-carrying position; means for releasing y the levers the carrying bars. I

.7. In a device of the character described, the combinatlon of adding wheels; carry-- the combination of adding wheels; carrying bars associated with said wheels and adapted to be moved thereby from non-carrying to carrying position; locking means for holding said bars in carrying position; and anchoring means for positively holding said bars in non-carrying position against movement toward carrying position and adapted to be engaged by the adding wheels for re leasing the'carrying bars.

5. In a device'of the characteridescribed, the combination of adding wheels; carrying bars associated with said wheelsand.

adapted to be moved thereby from non-carrying to carrying position; locking means for positively holding said bars in carrying position againstmovement toward noncarrying position; and .anchoring means for positively holding said bars ,in non carrying position.

6. In a device of the character described,

the combination of adding wheels; carrying bars associated with said wheels and adapted to be moved thereby from non-carrying to carrying position; yieldable lock-- ing means for positively holding said bars in carrying position against movement toward non-carrying position; means for releasing the locking means; and anchoring means pivotally mounted on the carrying bars for positively holding said bars in noncarrying position, and adapted to be engaged by the adding wheels for-releasing ing bars associated with said wheels and adapted to be moved thereby from noncarrying position to carrying position; yieldable means .for positively holding said bars, when in "carrying position, against movement to non-carrying position; anchor ing means for positively holding the bars, in non-carrying position, against movement toward carrying position; and means'engaged by the adding wheels for'relea sing the anchoring means.

carrying position against movement toward 8. In a device of the character described,

a frame; adding wheels each having a spur corresponding to the tens unit; carrying bars for cooperating with said adding wheels pivotally, connected to said-frame; spurs on said bars for cotiperating with the said spurs of said adding wheels; means for positively locking said bars against displacement whether the spurs of said bars are in or out of engagement with the spurs of said adding wheels; and the spurs of said adding wheels cooperating with said locking means to release said bar's when the spurs of said bars are about to cooperate with the spurs of said adding wheels.

10. In a device of the character described, a frame, accumulating wheels each having.

a spur corresponding to the tens unit, carrying bars for cooperating with said accu- 'mulating wheels pivotally connected to said frame, spurs on said carrymg bars for cooperating with the said spurs of said accumulating wheels, brackets on said frame, a locking plate secured in said brackets,

guide plates secured by said brackets, and

bent levers pivotally connected to said carrying bars, guided by said guide plate and coiiperating with said locking plate to positively lock said carrying bars against disa placement when said carrying bars are out of carrying position.

11. "In a device ofthe character described, a frame, accumulating wheels each having a spur corresponding to the tens unit, carrying bars for cooperating with said accumulating wheels pivotally connected to sald frame, spurs on said carrying bars for cooperating with the said spurs of sand accumulating wheels, brackets on said frame, a locking plate secured in said brackets, guide plates secured by said brackets, a spring abutment rod on' said brackets, bent levers pivotally connected 'to said carrymg bars,

guided by said guide plate and cooperatingwith said locking plate to positively lock said carrying bars against displacement when said carrying bars are out of carrying position, and springs connectlng said ent levers with said abutment rod to normally maintain said bent levers in locked position. 12. In a device of the character described, a frame, adding Wheels each having a spur corresponding to the tens unlt, carrying bars for cotiperating with said adding wheels pivotally connected to said frame,

spurs on said bars for coiiperating with the 6 said spurs of said adding wheels, a locking plate secured to said frame, bent levers pivotally connected to 'said carrying bars and coiip'erating with said locking plate to posi tively lock said carrying bars against displacement when said carrying-bars are out of carrying position, and cam portions on said bent levers positioned to cooperate with the spurs of said adding wheels to release said bent levers when the spurs of said adding wheels are about to coiiperate with the spurs of said carryin bars. v

13. In a device of t 1e character described, a frame, adding wheels'each having a spur corresponding to the tens unit, carrying bars for cooperating with said adding wheels pivotally connected to said frame, spurs on said bars for-cooperating with the said spurs of said. adding wheels, a locking plate secured to said frame, bent leverspivotally connected tq said carrying bars and coiiperv ating with said locking plate to positively lock said carryingbars against displacement when said carrying bars are out of carrying ""pos'ition, and camportions on said bent levers spaced apart from the lower edges of thesaid carrying bars when said bent levers are in locked position and positionedto be depressed against said carrying bars by the spurs of said adding wheels to release said bent levers.

14. In a device of the character described, a frame, adding wheels each having a spur corresponding to the tens unit, carrying bars for coiiperating with said adding wheels pivotally connected to said frame, spurs on said bars for coiiperating with the said spurs of said adding wheels, a locking plate secured to said frame, bent levers ivotally connected to said carrying bars an cotiperating with said locking plate to positively lock said carrying bars against displacement when said carrying bars are out of carrying position, and cam portions on said bent levers spaced apart from the lower edges of the said carrying bars when said bent levers are in locked position and positioned to be depressed'against said carrying bars by the spurs of said adding wheels to release saidbent levers when the spurs of said adding wheels are about to coiiperate with the spurs of said carrying bars.

15. In a device of the character described,

a frame, adding wheels. each having a spur corresponding to the tens unit, carrying bars for cooperating with said adding wheels pivotally connected to said frame, spurs on said bars for cooperating with the said spurs of said adding wheels, a locking plate secured to said frame, and bent levers pi,"-

otally connected to said carrying bars and coiiperating with said locking plate to positively lock said carrying bars against displacement whensaid carrying bars are out of carrying position, the carrying bars having concave depressions rearwardly of their spurs, cam portions on said bent levers conforming to and spaced apart from said concave depressions when said levers are in locked position and positioned to be depressed against said carrying bars by the spurs of said adding wheels to release said bent levers when the spurs of said adding 0 wheels are about to cooperate with the spurs of said carrying bars.

WILLIAM W. LASKER. Witnesses BENJAMIN B. AVERY, H. I. SLEGEL. 

